The Unbottle is an insulated reservoir sleeve that keeps your liquids cool and safe from the in-car environment. Also allows you to safely strap the reservoir somewhere in your cockpit. Integrates perfectly with the Stilo Hydration system. 3L/100oz Unbottle..

ST4 and ST5 are homologated with a drinking system integrated.The drinking system is comprised of a tube going inside the helmet with a silicon bite valve with anti-backflow system and a male quick coupling...